code: def ticker2_change(attrname, old, new):
      ticker1.options = nix(new, DEFAULT_TICKERS)
      update()
  
file_path: bokeh/examples/server/app/stocks/main.py
imports: from functools import lru_cache
  from bokeh.layouts import column, row
  from bokeh.models import ColumnDataSource, PreText, Select
  from bokeh.plotting import curdoc, figure
label_desc: Use image node_id 4 for calling a global function with example usage: ticker2_change(attrname, old, new) without return types